Abstract
Electric Vehicles (EV) and Hybrid EV (HEV) use Lithium (Li) ion battery packs to drive them. These battery packs possess high specific density and low discharge rates. However, some of the limitations of such Li ion batteries are sensitivity to high temperature and health degradation over long usage. The Battery Management System (BMS) protects the battery against overvoltage, overcurrent etc., and monitors the State of Charge (SOC) and the State of Health (SOH). SOH is a complex phenomenon dealing with the effects related to aging of the battery such as the increase in the internal resistance and decrease in the capacity due to unwanted side reactions. The battery life can be extended by estimating the SOH accurately. In this paper, an extensive review on the effects of aging of the battery on the electrodes, effects of Solid Electrolyte Interface (SEI) deposition layer on the battery and the various techniques used for estimation of SOH are presented. This would enable prospective researchers to address the estimation of SOH with greater accuracy and reliability.
Highlights
Traditional Vehicles use fossil fuels to drive them
The classification of energy storage devices is based on their functionality2 of and of energy stored
It takes into account the effect of change in the internal resistance, capacity and effect of fast discharge leading to high temperature and self-discharge
Summary
Traditional Vehicles use fossil fuels to drive them. Electrification of the current transportation is necessary to prevent air pollution. In this regard, various energy storage devices. Received: 4 July 2021 are used in Electric Vehicles (EV) namely 1. The classification of energy storage devices is based on their functionality of and of energy stored. Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Devices [1]. [1]
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